Guard-board for rolls of paper-making machines.



no. 684,924. Patented oct. 22, |901.-

G. H. nuusronm GUARD BOARD FOR ROLLS DF'P'APER MAKING MACHINES.

(Application led Dec. 14, 189B.)

(NoModel'.)

D? E' I) e A@ i @n i "v Q,

E b5" i l UNITED STATES PATENT "EEICE.I

GEORGE H. DUNSFORD, OF WILLIAM PENN, PENNSYLVANIA.

GUARD-BOARD FOR ROLLS OF PAPER-MAKING MACHINES.

SPECIFICATION forming part Of Letters lPatent No. 684,924, dated October 22, 1,901.

Application filed-December 14, 1'899. Serial No. 740,280. (No model.)

'the roll by using a exible guard-board, as

fully described hereinafter.

My invention can be either applied to the press-roll, couch-roll, or breast-roll of a paper-l making machine or to the rolls of any ma- 'chines in which it is necessary to keep the rolls clean. l

In the accompanying drawings, Figure 1 is a front view illustrating a roll and Ymy improved guard-board in position, and Fig. 2 is I'an end View of Fig. l.

l I have dispensed with the frame of the machine, as it will only confuse the drawings,

Iand have simply shown the roll and the support for the guard. The rolls, of course, may be adapted to any'suitable bearings, and the i support for the guard may be attached in any manner.

A is the roll, in the present instance a couchroll, of a paper-making machine.

B is a support secured at each end to the frame of the machine. Carried by Ithe support B isa flexible guard-board D, made of any suitable rubber composition, and the edge of this guard-board rests upon the upper surface of the roll A in the present instance, as shown.

d is a plate clamped to the face of the guardboard by bolts d, arranged at intervals, and c is a plate extending across the top of the guard-board. Passing through a projection I from the support B and bearing upon this plate are set-screws c' for regulating the Apressure of the guard-board upon the roll. I have provided a series of ,these set-screws, so that the guard-board can be adjusted at any point throughout its length. Y

Mounted above the guard-board on the support B is a shower-pipe E, supported by brackjets e, and in front of the guard-board is a support F, carried by brackets f, and on this support is -the felt Wiperf, which bears upon the surface of the roll A and prevents the water from the shower passing to the rear of the roll.

The bolts d' pass through slotted openings in the plate d and in the IieXible guard-board D, so that the guard-board lcan be adjusted by the .set-screws. l

It will be understood that this device may be used on any of the rolls of a paper-making machine or on any machine in which the rolls are to be kept cleansuch as starching-rolls, drying-rolls, dac.

I make the ilexible guard-board of a composition of rubber and fabric arranged in layers, so that it will be stid enough to hold its place, and yet will not Wear away the covering of the roll. It is made in such form that it can be readiy applied, and need not necessarily be attached in the manner shown in the drawings.

By using the material above described IV can reduce the width of the guard considerably, thus reducing the friction upon the roll, making a much more satisfactory guard than heretofore. When used in connection with a press-roll, it takes the place of the ordinary metal doctor-blade, which in many instances scores the roll.

I claim as my inventionl. The combination in a paper-making or other machine, of a rolla support, a projection on said support, setscrews passing through said projection, a'guard-board hav-y ing one side bearing against the support and an edge bearing on the roll, a plate extending along the other edge of saidV guard-board constructed to be pressed upon by said set-screws, and bolts passing through the guard-board and adj ustably holding it to the support, 'suby stantally as described.

2. The combination in a paper-making or other machine, of'a roll, a support, a iiexible guard-board carried by the support, said guard-board consisting of strips of dissimilar materials compressedA into a solid mass, the edge of the guard-board resting upon the roll,a plate having slots in it on one side of the guardboard, bolts in said slots extending through IOO slots in the guard-board into said support, the edge of the same bearing upon the rol'l, I with means for adjusting the said guard-board substantially as described. to the roll when the said bolts are loosened, In testimony whereof I have signed my substantially as described. name to this specification in the presence of 3. The combination in a paper-making or two subscribing Witnesses.

other machine, of a. roll and a. guard-board GEORGE H. DUNSFORD.

mounted in Contact with the roll, said guard- Witnesses:

board consisting of exible strips of dissimi- WILL. A. BARR,

1m' materials compressed into a solid mass, JOS. H. KLEIN. 

